Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 32 for “"self-calibration"”.
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Study of photogrammetric self-calibration adjustment method
The development of a viable self-calibration approach for use with non-metric cameras was investigated. Both computer generated and actual test camera data were generated to determine the effectiveness of the math model and computer program. A twenty-seven parameter bundle adjustment routine was …
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Robust Video Object Tracking via Camera Self-calibration
… robust video object tracking assisted by camera self-calibration is proposed, which includes several algorithmic components. (1) An algorithm for joint camera self-calibration and automatic radial distortion correction based on tracking of walking persons is designed to convert multiple object …
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Digital self-calibration techniques for high-accuracy, high speed analog-to-digital converters
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Modeling the Thermal Performance of an Intelligent MEMS Pressure Sensor with Self-Calibration Capabilities
… with a pressure sensor, the sensor can self-calibrate, eliminating the complexities and costs associated with traditional sensor calibration methods. The present work is focused on furthering understanding and improving the thermal performance of a thermopneumatic actuated …
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A SEIR-based ADC built-in-self-test and its application in ADC self-calibration
… with high test equipment cost. An ADC built-in-self-test (BIST) is an attractive solution. However the stringent linearity requirement for an on-chip signal generator has made it prohibitive. The stimulus error identification and removal (SEIR) method has greatly reduced the linearity …
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State estimation for autonomous mobile systems: Multi-IMU self-calibration and localization using 3D Gaussian splatting maps
… between them—a task referred to as extrinsic calibration—is particularly important. Similarly, a primary function of sensors on autonomous systems is to establish the agent's pose within a predefined coordinate frame, a task referred to as localization. These two tasks share a common …
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Digitally-Assisted RF IC Design Techniques for Reliable Performance
… digitally-assisted RF circuit design techniques: self-calibration system for RF phase shifters and wide dynamic range LNAs.</p> <p>Due to PVT variations in scaled technologies, RF phase shifter design becomes more challenging with device scaling. In the proposed self-calibration topology, we …
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Self-calibrating mass flow sensor
… was conducted for increased accuracy and self-calibration for a mass flow sensing system on a combine. This was undertaken as part of the John Deere Technology Innovation Center (JDTIC)-sponsored research program “Self-calibrating mass-flow sensor”, in turn part of a John Deere Moline …
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Code-error calibration techniques for two-step flash analog-to-digital converters
… Although techniques such as laser-trimming, self-calibration and error-averaging have been developed to achieve high matching accuracy of components, they are not readily applied to flash-type ADCs.
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Reduction and analysis of Vla maps for 281 radio-loud quasars using the Cray Y-Mp supercomputer
… routine reduction included two passes of phase self-calibration. Maps were made with image size of 512 x 512. The A (C) array maps have 0.1 (1.3) arcsec cell sizes, with 0.1 to 0.2 (0.2 to 0.4) mJy/Beam rms noise and dynamic ranges of a few thousand. Radio positions and flux densities were …
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Development of a Self-Calibrating MEMS Pressure Sensor Using a Liquid-to-Vapor Phase Change
… equipment has led to the development of a self-calibrating pressure sensor. Pressure sensor inaccuracies are often resolved with sensor calibration, which typically requires the use of laboratory equipment that can produce a known, standard pressure to actuate the sensor. The developed …
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Exploiting Optical Contrasts for Cervical Precancer Diagnosis via Diffuse Reflectance Spectroscopy
… of optical spectroscopic systems are calibration requirements and variable probe-tissue contact pressures. Our results suggest that using a real-time self-calibration channel, as opposed to conventional post-experiment diffuse reflectance standard calibration measurements, …
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Test of Light Speed Constancy With Light Age Using an Active Fiber-Based Mach-Zehnder Interferometer
… fiber. System error is eliminated by the self-calibration which is achieved by alternatively switching other two local amplified spontaneous emission light sources and the sunlight as the input to the MZI, and then comparing the measured phase differences of these three sources. The …
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Acoustic Coherence Imaging Through the Atmosphere
… to be made that characterize the atmosphere itself. Methods for enhancing image quality are discussed. It is shown that the popular self-calibration family of reconstruction methods from the radio astronomy community are not applicable to the acoustic imaging case. A new method, based on …
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Self-Calibrated Interferometric/Intensity Based Fiber Optic Temperature Sensors
… a novel type of fiber optic sensor system titled self-calibrated interferometric/intensity-based (SCIIB) fiber optic temperature sensor system is presented in this thesis including the detailed research work on the principle analysis, design, modeling, implementation and performance evaluation of …
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Methods for Optimal Model Fitting and Sensor Calibration
… In this thesis the problem of sensor network self calibration is investigated. Sensor networks play an increasingly important role with the increased availability of mobile, antenna equipped, devices. The application areas can be extended with knowledge of the different sensors relative or …
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The Influence of Physical Processes in Galaxy Clusters on Observable Cluster Scaling Relations
… derived from cluster abundances often rely on calibrations or functional forms of these relations. On the other hand, the form and evolution of the mass-observable relations are affected by astrophysical processes during cluster formation. Understanding these processes not only provides …
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Metal-Organic Framework-Based Biosensors for Enzyme-Linked Assays
… is particularly advantageous as it allows self-calibration, minimising errors associated with suspension concentration when distributed in plate wells. Since dNTPs and PPi are converted during DNA amplification, these sensors are suitable for evaluating optimal LAMP conditions, including …
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Depth camera calibration using depth measurements
… the depth images - and then use them for calibration. Previous work to calibrate the depth cameras involves either using a multiple camera set-up or using an extremely precise optical measurement rack to move checker-board images in the camera’s field of view. However, we want average …
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Radio-derived three-dimensional structure of a solar active region
… data for spectroscopic studies, the L1 method of self-calibration was implemented at this observatory, producing the best single frequency maps produced to date. Images at the 25 distinct, available frequencies are used to provide spatially resolved spectra along many lines of sight in the active …
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